version: '2'
services:
  db:
    container_name: "db_mysql"
    image: mysql
    environment:
        MYSQL_ROOT_PASSWORD: "SecretPasswd"
        MYSQL_DATABASE: "somedb"
        MYSQL_USER: "userdb"
        MYSQL_PASSWORD: "SecretPasswd"
    volumes:
        - D:/Development/data/db:/var/lib/mysql

`docker-compose up -d --build --force-recreate`

mysql -uroot -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)